iCloud Photo Library works seamlessly with the new Photos app to keep your photos and images stored in iCloud and up to date on your iPhone, iPad, iPod Touch, Mac, and iCloud.com. You can access all your photos from anywhere.
Check below the method to view photos on iCloud in iOS, Mac, and PC.
For iOS:
Move to setting > iCloud > Photos, turn on ‘My Photo Stream’.
For Mac:
Step 1: Go to Apple. Click on ‘System Preferences’ and then click on ‘iCloud’.
Step 2: Select the checkbox for ‘Photos’ or ‘Photo Stream’.
Step 3: Click the ‘Options’ button and make sure that ‘My Photo Stream’ is selected.
Step 4: Open the app that you want to use with Photo Stream (iPhoto or Aperture) and make sure that My Photo Stream is turned on in that app.
For PC:
Step 1: Open iCloud for Windows 4.0 or from iCloud Control Panel > select checkbox for Photos.
Step 2: Click ‘Options’ button and make sure that ‘My Photo Stream’ is on and adjust the settings according to your need.
Step 3: Click ‘Apply’ after finalizing.